diegoripley/tippecanoe
1
0
Fork 0
mirror of https://github.com/felt/tippecanoe.git synced 2026-10-02 16:35:40 +02:00
Code Issues Packages Projects Releases Wiki Activity

Special-case a longitude wraparound of exactly 360°

Browse Source
This commit is contained in:
Erica Fischer
2023-10-27 12:43:21 -07:00
parent e1c665b35d
commit 2af162fb80
3 changed files with 26 additions and 2 deletions
Download Patch File Download Diff File Expand all files Collapse all files
serial.cpp
+5 -2
View File
@@ -328,10 +328,13 @@ static long long scale_geometry(struct serialization_state *sst, long long *bbox
if (geom[i].op == VT_LINETO) {
x += offset;
if (has_prev) {
if (x - prev > (1LL << 31)) {
// jumps at least 180° but not exactly 360°,
// which in some data sets is an intentional
// line across the world
if (x - prev > (1LL << 31) && x - prev != (1LL << 32)) {
offset -= 1LL << 32;
x -= 1LL << 32;
} else if (prev - x > (1LL << 31)) {
} else if (prev - x > (1LL << 31) && prev - x != (1LL << 32)) {
offset += 1LL << 32;
x += 1LL << 32;
}